Answer:
54.035127
Explanation :
to convert 13.5 moles of helium to grams, we multiply 13.5 moles of helium by 4.00260. Here is the Moles of Helium to Grams Formula, the math, and the answer to 13.5 moles of helium converted to grams.
Moles of Helium × 4.00260 = Grams
13.5 × 4.00260 = 54.0351
13.5 Moles of Helium = 54.0351 Grams